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2003 GMC Envoy XL SLT 4.2L Poor Fuel Economy, MIL Lamp on
Posted to GM Driveability on 9/20/2011 18 Replies

Thanks in advance for any help with this one! This Envoy came in a few months ago complaining bout fuel milage. We did a complete tune up: plugs, boots, fuel filter, and cleaned the throttle plate. We also told him to run some Sea Foam in the fuel to help clea...

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  Related Documents & Media  2003 GMC Envoy XL SLT

 
Message Closed w/FIX

car Vehicle Data

2003 GMC Envoy XL SLT

VIN 1GKET16S73
Engine4.2 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsPoor Fuel Economy, MIL Lamp On
OccursIntermittently

Trouble Codes

P0172Fuel System Too Rich (Bank 1)
P0495Cooling Fan Speed High
Message Closed w/FIX

car Vehicle Data

2003 GMC Envoy XL SLT

VIN 1GKET16S73
Engine4.2 L / 6 cyl / GAS
Trans4-speed Automatic (Electronic)
DeliveryFuel Injection
EmissionsOBD-II Compliant
SymptomsPoor Fuel Economy, MIL Lamp On
OccursIntermittently

Trouble Codes

P0172Fuel System Too Rich (Bank 1)
P0495Cooling Fan Speed High